Construction Warm Flat Roof Fascia Detail

A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

Construction warm flat roof fascia detail. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. Doing it the builder s way you are looking at 125 kingspan. By way of metal flat roof joist hangers. It must provide adequate protection against the elements keeping the buildings structure and interior dry.

No one online shows you this which is. Whether the joists are angled or you use firrings. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Flat roof types.

Those details show the chief drawback of the warm roof the deep fascia. Your sketches seem to show the insulation proportionately thinner than it needs to be. Hopefully this video will help explain the difference between warm flat roof construction and cold flat roof construction. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal.

Construction studies drawing detail showing how to draw a flat roof warm deck construction detail to a scale of 1 10 with a short introduction highlighting t. For additional stability you can also use steel joists that are built into one or both of the walls. Flat roof construction for residential. This video shows detailed drawing.

Using timber wall plates. Say 150 joists and 152 beam which gives a fascia about 450 deep rather ungainly. No flat roof is truly flat. A flat roof must be strong durable and stable throughout its lifetime.

So if i make the new roof a warm roof insulation behind the fascia is straightforward if fiddly i just need to persuade the roofer to close and insulate the gaps between joists by taking off the old fascia and inserting pieces of rigid insulation between joists and use expanding foam to seal the insulation to the joists roof board and wall including the ceiling plasterboard to the. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. This article covers all manner of flat roofing venting methods and details on how to build a flat garage roof and how to frame a flat roof and also encompasses flat roofs roof decking roof coverings including flat roof felt how to prevent leaks at abutments timber flat roof construction details and parapets and common. The other is putting osb and insulation on even a slightly sloping roof means everything from the top of the joist up will not be plumb but run at an angle.